用灵敏度0.02/1000mm水平仪测量,气泡移动3格,测量长度为800mm时,表两侧高度偏差值为()mm。
A.0.06
B.0.016
C.0.048
D.0.08
参考答案:B
一般粗车选取切削用量时,应首先选取尽可能大的()。
Playing on the football pitch ____________________.
A.some students are with their P.E. teacher
B.their P. E. teacher is with some students
C.some students with their P. E. teacher are
D.are some students with their P. E. teacher